1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
|
<!DOCTYPE html>
<title>Tests the scrollable containing-block usage with position-area.</title>
<link rel="help" href="https://drafts.csswg.org/css-anchor-position-1/">
<link rel="help" href="https://drafts.csswg.org/css-position-4/#scrollable-containing-block">
<link rel="help" href="https://github.com/w3c/csswg-drafts/issues/12552">
<style>
.scroller {
/* Use overflow hidden instead of scroll to mitigate scrollbar differences. */
overflow: hidden;
position: relative;
width: 80px;
height: 80px;
margin: 10px;
border: solid 3px;
padding: 10px;
}
.filler {
min-width: 180px;
min-height: 180px;
}
.anchor {
anchor-name: --a;
width: 50px;
height: 50px;
position: relative;
left: 60px;
top: 60px;
background: orange;
}
.target {
position: absolute;
position-anchor: --a;
place-self: stretch;
background: cyan;
}
</style>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/resources/check-layout-th.js"></script>
<body onload="checkLayout('.target')">
<!-- top -->
<div class="scroller">
<div class="filler"><div class="anchor"></div></div>
<div class="target" style="position-area: top;" data-offset-x="0" data-offset-y="0" data-expected-width="200" data-expected-height="70"></div>
</div>
<!-- right -->
<div class="scroller">
<div class="filler"><div class="anchor"></div></div>
<div class="target" style="position-area: right;" data-offset-x="120" data-offset-y="0" data-expected-width="80" data-expected-height="200"></div>
</div>
<!-- bottom -->
<div class="scroller">
<div class="filler"><div class="anchor"></div></div>
<div class="target" style="position-area: bottom;" data-offset-x="0" data-offset-y="120" data-expected-width="200" data-expected-height="80"></div>
</div>
<!-- left -->
<div class="scroller">
<div class="filler"><div class="anchor"></div></div>
<div class="target" style="position-area: left;" data-offset-x="0" data-offset-y="0" data-expected-width="70" data-expected-height="200"></div>
</div>
|
